Chosen Solution

Sorry for posting by translation tool. I bought it at Apple store in Japan one year and a half ago. A film like copper foil came out of the seam between the bottom part and the body. Just the vents on both sides. I will also attach the image

When I contacted support, I was told that the cause was unknown, and that the repairs cost $ 500. Anyone with the same symptoms, or who knows the cause?

Your battery is about to rupture! Turn it off, disconnect the charger! Get your system to Apple as soon as you can as if it ruptures your system could explode and catch fire! This should be covered under warranty!